Metro has commenced construction on the Purple (D Line) Extension Transit Project in Los Angeles, California, aimed at enhancing mobility by expanding the rail system to the Westside. This significant and eagerly awaited expansion of Metro’s network will introduce seven new stations, providing a dependable, high-speed link between downtown and the Westside.
As one of the most bustling regions in Los Angeles, the Westside ranks as the second-largest employment hub in the area. The Metro Purple (D Line) Extension Transit Project is set to enhance connectivity among these vibrant locales, facilitating improved travel for all residents, workers, and visitors in LA County. Once the full extension is finalized in 2027—one year ahead of the 2028 Olympics in Los Angeles—neighbourhoods throughout the city will enjoy better interconnectivity.
The primary aim of this new transit line is to create a more relaxed and enjoyable travel experience. While travel times may not significantly decrease, passengers will find it easier to navigate between West LA, downtown, and various points in between. During peak hours, commuters can expect to travel from the Westside to downtown in just 20 minutes.
The extensive project is not expected to be finished overnight and is projected to take nearly ten years to complete. Engineers from various fields will encounter numerous challenges throughout the process, with environmental concerns being a significant factor. Sonitus Systems will assist project managers in managing noise emissions throughout the various stages of construction.
Three sections
In 2019 the construction of the purple line has begun. There are three different sections to be completed in different time frames:
Section 1
Wilshire/La Brea Station, Wilshire/Fairfax Station and Wilshire/La Cienega Station; slated to open in 2024.
Section 2
Wilshire/Rodeo Station and Century City/Constellation Station; slated to open in 2025.
Section 3
Westwood/UCLA Station and Westwood/VA Hospital Station; slated to open in 2027.
UCLA Noise Monitoring
The extensive nature of this urban development project significantly affects the environment for residents, businesses, and public facilities. To manage noise emissions from construction activities effectively, ongoing environmental monitoring is essential to detect any excessive noise levels.
The Geffen Academy at UCLA is among the structures along the new Purple D line that may experience noise pollution due to construction work. In 2020, two EM2030 environmental noise monitors were set up around the perimeter to ensure that noise disturbances are controlled, tracked, and minimized.
The system includes valuable supplementary features for enhanced data analysis. These features consist of:
- audio capture, to pinpoint noise sources and;
- frequency analyses for more comprehensive research.
Both systems deliver consistent and dependable data, which is uploaded to an online cloud platform. Project managers will receive notifications through email and SMS alerts when noise levels surpass the established thresholds or when designated working hours and quiet periods are not respected.
The Equipment
The EM2030 is designed for scenarios that require dependable measurements with minimal effort. Users can simply power on the device to begin monitoring, and all data will be automatically uploaded to our online reporting platform.
The EM2030 kit includes a durable measurement unit, a weather-resistant outdoor microphone, a microphone mounting stand with a cable, and a mains power supply. Options for battery or solar power are also available.
Setup and configuration of the system can be performed via a Wi-Fi connection using a laptop, tablet, smartphone, or any other mobile device.
This system is particularly suitable for environments where access or safety may be a concern, such as construction sites, industrial areas, or roadside installations. The EM2030 is complemented by our robust online analysis and reporting system, Sonitus Cloud, which allows you to access your sound level data from any location.
More information
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